Sexual conjugation and sex pheromone in Streptococcus faecalis.
نویسندگان
چکیده
منابع مشابه
Isolation and structure of the Streptococcus faecalis sex pheromone, cAM373.
The Streptococcus faecalis sex pheromone, cAM373, which induces a mating response of donor cells harboring plasmid pAM373 and is also produced by Staphylococcus aureus, was isolated and its structure determined. Supernatant from an overnight culture of a recipient strain was subjected to successive purification procedures, and 4.4 micrograms cAM373 was obtained. The isolated pheromone showed ac...
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Many bacterial activities, including expression of virulence factors, horizontal genetic transfer, and production of antibiotics, are controlled by intercellular signaling using small molecules. To date, understanding of the molecular mechanisms of peptide-mediated cell-cell signaling has been limited by a dearth of published information about the molecular structures of the signaling component...
متن کاملMechanisms of peptide sex pheromone regulation of conjugation in Enterococcus faecalis
In many gram positive bacteria, horizontal transfer and virulence are regulated by peptide-mediated cell-cell signaling. The heptapeptide cCF10 (C) activates conjugative transfer of the Enterococcus faecalis plasmid pCF10, whereas the iCF10 (I) peptide inhibits transfer. Both peptides bind to the same domain of the master transcription regulator PrgX, a repressor of transcription of the prgQ op...
متن کاملIsolation and structure of the bacterial sex pheromone, cAD1, that induces plasmid transfer in Streptococcus faecalis.
The Streptococcus faecalis sex pheromone cAD1, which is involved in the conjugative transfer of the hemolysin plasmid pAD1, has been isolated and its structure determined. Its Mr is 818 and its amino acid sequence is H-Leu-Phe-Ser-Leu-Val-Leu-Ala-Gly-OH. A replicate of the pheromone synthesized by the liquid-phase method showed the same biological activity and chromatographic behavior as the is...
متن کاملInduced cell aggregation and mating in Streptococcus faecalis: evidence for a bacterial sex pheromone.
Recipient strains of Streptococcus faecalis produce a trypsin sensitive, heat resistant, nuclease resistant factor, designated clumping-inducing agent (CIA) which causes strains carrying certain conjugative plasmids to aggregate. RNA and protein synthesis but not DNA synthesis are required for aggregation to occur. Recipient filtrates that contain CIA activity also induce donors to mate at high...
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ژورنال
عنوان ژورنال: Journal of the agricultural chemical society of Japan
سال: 1987
ISSN: 0002-1407,1883-6844
DOI: 10.1271/nogeikagaku1924.61.1636